Add questions for the maintenance section

Author: cgarbin

datasheet-for-dataset-template.md

@@ -247,3 +247,30 @@ reproduce, any supporting documentation._
 
 ## Maintenance
 
+### Who is supporting/hosting/maintaining the dataset?
+
+### How can the owner/curator/manager of the dataset be contacted (e.g., email address)?
+
+### Is there an erratum?
+
+_If so, please provide a link or other access point._
+
+### Will the dataset be updated (e.g., to correct labeling errors, add new instances, delete instances)?
+
+_If so, please describe how often, by whom, and how updates will be communicated to users (e.g., mailing list, GitHub)?_
+
+### If the dataset relates to people, are there applicable limits on the retention of the data associated with the instances (e.g., were individuals in question told that their data would be retained for a fixed period of time and then deleted)?
+
+_If so, please describe these limits and explain how they will be enforced._
+
+### Will older versions of the dataset continue to be supported/hosted/maintained?
+
+_If so, please describe how. If not, please describe how its obsolescence will be communicated to users._
+
+### If others want to extend/augment/build on/contribute to the dataset, is there a mechanism for them to do so?
+
+_If so, please provide a description. Will these contributions be validated/verified? If so,
+please describe how. If not, why not? Is there a process for communicating/distributing these
+contributions to other users? If so, please provide a description._
+
+### Any other comments?